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Are there any differences between ewes and cows in the oestrus cycle?

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Are there any differences between ewes and cows in the oestrus cycle?

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Ewes: Quote from source 1: “The reproductive organs of the ewe function in repetitive cycles of about 16 days, called oestrous cycles. Towards the end of each cycle ewes will accept and may actively seek out rams. At this time she is said to be in oestrus or in heat.” Cows: Quote from source 2: “As long as a cow or heifer is not pregnant she will normally have a 21-day oestrus cycle. The length of the oestrus cycle may vary but it usually ranges from about 17 to 24 days. A heifer normally has an oestrus cycle slightly shorter than a cow. The cycle will continue until the cow is in calf. After calving, cows normally undergo a 20 to 30 day period when oestrus cycles do not occur. This period can increase in high yielding cows, unable to take in enough energy to fully cover milk production. The cow will protect herself and will wait to get in oestrus again.” It’s not “melantonin” but “melatonin” Quote from source 3: “Seasonal changes in daylength have profound effects on reproduction in m

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